perforated hdg steel strut channel size 1.Professional manufacturer & exporter 2.CCC,CE,NEMA,UL ... 2. Standard length: 2440mm, 3000mm, 5800mm, 6000mm 3. Standard size: 41*21, 41*25, 41*41,41*62,41*72 ... numerous organizations that further the betterment of cable tray production and installation.Besca's commitment to the bettering of ... :Reference Project Involved: perforated hdg steel strut channel size